Electric controller.



' No.848,006. Y PATENTBD MAR. 26, 1907.

R. w. BROWN.

ELECTRIC CONTROLLER.

APPLHJATIDH FILED APR. 19,1906.

3 SHEETS-411E171 1.

N0. 848.006. PATENTED MAR. 26, 1907.

I R. W. BROWN.

ELECTRIC CONTROLLER.

APPLICATION FILED APR.19,1B06.

3 SHEETS-SHEET 2.

PATBNTED MAR 26, 1907.

- -R. w. BROWN.

ELECTRIC CONTROLLER. APPLIUATION TILED APE. 19,1906.

Till NORRIS Pn'ilt I71. (Annumm LII.

UNITED STATES PATENT OFFICE.

ELECTRIC CONTROLLER.

Specification of Letters Patent.

Patented Ill/Larch 26, 1907.

implication filed April 19,1906. Serial No. 312,615.

To ail whom it may concern.-

Be it known that I, ROY W. BROWN, a citizen of the United States, and aresident of Amsterdam, county of Montgomery, State of New York, haveinvented a new and useful Improvement in Electric Controllers, of whichthe following is a specification.

My invention relates to electric controllers; and it has for its objectto provide a controller having resistances mounted in the body thereof.

The invention consists in providing a drum having electric contactsmounted thereon and resistances located therein.

The invention also consists in providing an article of manufacturehaving a resistancebody mounted in Portland cement.

The invention also consists in surrounding a resistance-body by amoisture-proof composition and one which prevents electrolytic actionand inclosing the resistance thus surrounded in Portland cement.

The invention also consists in a system of wiring to be used inconnection with a drum electric controller having the resistance mountedtherein and which enables the same to reverse the direction of motion ofa motor.

My invention consists in other features dis closed in the followingdescription, illustrated in the drawings, and claimed in the claims.

Referring to the drawings, Figure 1 is a front view of the drum electriccontroller. Fig. 2 is an end view, and Fig. 3 is a side view, of thedrum opposite to that illustrated in Fig. 1. Fig. 4 is the electricsystem of wiring used in connection with my invention. 7 Fig. 5' is amodification of the system of wiring shown in Fig. 4. Fig. 6 is anillustration of the resistance body or unit used in the sys temillustrated in Fig. 4. Fig. 7 is an end view of the device shown in Fi6. Fig. 8 is an illustration of the modified orm of the resistance unit.Fig. 9 illustrates an end view of the device shown in Fig. 8.

Referring to Fig. 1, 1 indicates the controllerbox, having the bearings2 3, in which is supported the shaft 4. To the shaft 4 is at tached awheel 5, which is operated by a chain or cord 6. It may also be operatedby a crank. On the shaft 4 is mounted a drum 7, made of Portland cement.The wheel 5 is adapted to turn the cylinder 7 when the rope 6 isoperated.

The cylinder 7 is provided with a plurality of contacts (numbered 8 to25, inclusive) which are mounted on the surface thereof and which areconnected, by means of screws. to anchors (numbered 40 to 49, inclusive)which are adapted to anchor the contacts and connect certain of thecontacts together.

The resistance-bodies are located in the body of the cylinder 7 and runthe length thereof. Each resistance-body consists of a wire or othermetallic body 71, which is completely inclosed in cement. A metalliccore 72 is completely embedded in a block of cement 73. This is paintedwith a paint which prevents the wire from absorbing any moisture orallowing any air to reach the resistancebody 71 and also prevents anyelectrolytic action between the metallic bodies and the cement. The wireor resistance-body 71 is then wound around or placed upon the block ofcement 73 and is painted with the non-absorbent and anti-electrolyticpaint and is inclosed in an outer coating or covering of cement 74,which completes the block. The paint consists of silicate of soda and aground calcined lava called lavite.- A number of the resistance-bodiesare connected to the contacts Nos. 11, 12, 13, 14, 15, '20, 21, 22, 23,and 24. They are set in the cylinder and securely fastened by fillingall spaces around them with Portland cement.

Electric connections are made between the resistances of the controllerand the system to be controlled through a plurality of brushes Nos. 81t6 92, inclusive, which are located on opposite sides of the cylinder 7and are adapted to make contact with the contacts 8 to 25, inclusive, asthe cylinder 7 is turned. The contacts are in each case controlled bythe springs 93, which are regulated by the screws 94 and the nuts 95.The contacts are supported upon the base of the controller-box 1.

An electromagnet-spool 96 is located within the cement cylinder 7 andsurrounds the shaft 4 of the cylinder 7. Poles 97 and 98 are located atthe end of the spool 96, which extend outward to the outside of thecylinder 7 and in the vicinity of the contacts 1'1 and 7. The magnet 96o crates as a blow-out magnet and reduces t e arcing of the currentbetween the contacts and the brushes when they separate from each other.

In the system illustrated in Fig. 4, 101 indicates the armature of amotor. 102 indi cates the field of the motor which is con trolled by theelectric controller illustrated in Fig. 1. 103 and 104 are main-lineconnections which lead to the rheostat and electric tions 86 17 18 S7controller or motor. The main line 103 is connected with the brush 83 ofthe electric controller, and main line 104 is connected with brushes 89to 92, inclusive, and with the i field 102 of the motor. The field 102is connected with the brush 84. The armature 101 is connected with thebrushes 81 and f on one side and 82 and 86 on the other.

Brushes 87 and 88 are connected together. i Contacts 8, 9; and 16,likewise contacts 17, 18, and 25, are connected together. Also contacts10, 14, 19, and Marc connected together. Contacts 11 and 20 areconnected together and to the resistance-body 105. Contacts 12 and 21are connected together i and to the resistance-bodies 106. Con

tacts 13 and 22 are connected together and to the resistancebodies 106and 107. (fontacts 15 and 23 are connected together and to theresistance-bodies 107 and 108. Resistance 108 is connected to contact24.

When the cylinder is turned in one direction, brushes 81, 83, and 84come in contact with contacts 8, 9, and 16, and brushes 86 to 89,inclusive, come in contact with contacts 17, 18, 1-9, and 20. Thecircuit is then closed from the main line 103 to the contacts 8, 9, and16, which closes a connection with the field of the motor 102 and thearmature 101. The circuit is completed through the connec- 88 19 24,resistances 108, 107, 106,105, 20, 89, and 104. As the cylindercontinues to turn brushes 90, 91, and 92 come in contact with contacts20, 21, 22, 23, and 24 in succession and the resistance 105, 106, 107,and 108 are successively cut out. Thisdirectly connects the motor withthe main lines 103 and 104 and causes the motor to move in full speed inone direction. When the direction of the cylinder is reversed, theresistances 105 to 108, inclusive, are successively included in thecircuit, and when the cylinder is brought to its first position thecircuit is broken. As the cylinder is turned to this final position thepoles of the blow-out magnet are brought into the vicinity of thebrushes and the field of the magnet disrupts any arcing that may occur.It the cylinder is moved still farther in this reversed direction, thebrushes 82, S3, and 84 come in contact with contacts 17, 1S, and 25, andbrushes 85, S7, 83, and 89 come in contact with contacts 8, 9, 1,0, and11. The circuit connection is now made from the main line 104 to thefield 102, contact '25, 1S, and S3 to the main line 103. Connection isalso made from the main line 10 1 through 89, 11, 20, 105, 106, 107,10s, 24, 19, 10, s7, 9, s, 81, 101, S2, 17, 18, 83 to the main line 103.This causes the current to llow through the motor in the opposi todirection and causes it'to move in the opposite direction.

In the modification illustrated in Fig. 5 brushes 80, 90, 01, 92, whichare connected I together in the system illustrated in Fig. 4,

tacts 20, 2], 2'2, 23, and 24 are arranged so that the brush 106 willmake contact with the 1 said contacts turned.

In Fig. 8 is illustrated a modification of the device illustrated inFig. 6. The device shown in Fig. 8 may be made in the form of acylinder, as shown in Fig. 0, having a central core 107 surrounded by acylindrical block of cement 108, on which is mounted the resistance-body109, the same being covered. with the non-absorbent and theanti-electrolytic paint, after which it is completely inclosed in thecovering of Portland cement 110.

In order to make a perfect electrical connection with theresistance-body 109 and the successively as the cylinder is exteriorconnections of the system, a ring- I clamp may be used.

The resistance-body is soldered or otherwise connected to the ring, andthe ring is tightly secured to the unit 110 by means of the screw 111and the lug 112. A connecting-wire may be secured to the clamp by meansof the nut 113.

The invention may be modified by those skilled in the art withoutdeparting from the spirit thereof.

What I claim as new, and desire to secure by Letters Patent, is asfollows:

1. In an electric controller the combina- .tion of a cylinder composedof Portland cement having contacts and resistance-bodies embeddedtherein and connected together by means of strips adapted to anchor thesaid contacts in the said cylinder.

2. In an electric controller the combination of a cylinder havingcontacts and a plurality of resistance-bodies embedded therein andstrips adapted to anchor the said contacts. in the said cylinder and toconnect certain of the said contacts with each other and with the saidresistance-bodies.

3. In an electric controller the combination of a cylinder composed ofPortland cement and having a resistance-body covered with a non-absorbent paint embedded therein.

4. In an electric controller the combination of a resistance-bodycovered with soda silicate and lavite and embedded in Portland cement.

5. In an electric controller the combination of a movable body having aplurality of contacts and a resistance-body and a blowout magnet locatedtherein.

6. In an electric controller the combination of a cylinder having aplurality of contacts, a plurality of resistances and'an electromagnetlocated in the said cylinder the said 'magnet having poles located inthe vicinity of certain of the said contacts.

7. In an electric controller the combination of a movable body having aplurality of contacts, a plurality of resistances connected to the saidcontacts and a blow-out magnet located thereon, a plurality of fixedcontacts adapted to make contact with the firstnamed contacts.

8. In an electric controller the combination of a cylinder having aplurality of contacts embedded therein, anchors for securing the saidcontacts, a plurality of resistances located in the said cylinder, aplurality of Iixed contacts adapted to make contact with the first-namedcontacts and a blovwout magnet located. in the said cylinder and adaptedto prevent arcing between certain of the said contacts.

9. In an electric system the combination of a source of electriccurrent, a controlled means, a cylinder having a plurality of contactsand a plurality of resistances mounted therein, brushes adapted to makecontact with the said contacts and so arranged with respect to the saidcontacts as to cause a current to flow in varying quantities in one direction when the cylinder is moved in one direction and to flow invarious quantities in the opposite direction when the cylinder is movedin the opposite direction.

10. In an electric controller a resistance body en'ibedded in cementcovered by a moisture-proof heat-resisting paint.

In testin'iony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

ROY W. BROWN.

Witnesses FRED G. Monss, J. H. DEALY.

